养儿子不教育和养驴没有什么区别，养女儿不教育也和养猪没什么区别；妻子如果贤惠，丈夫就少遭祸患，儿子如果孝顺，父亲就心情舒畅。

I don't compete with anyone but myself.

I don't care if you're black, white, straight, bisexual, gay, lesbian, short, tall, fat, skinny, rich or poor. If you're nice to me, I'll be nice to you. Simple as that.

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.